CVE-2023-28357

State: Published
Severity: 4.3 Medium
Published: May 11, 2023
Updated: Jan 27, 2025
Reserved: Mar 15, 2023

Description

A vulnerability has been identified in Rocket.Chat, where the ACL checks in the Slash Command /mute occur after checking whether a user is a member of a given channel, leaking private channel members to unauthorized users. This allows authenticated users to enumerate whether a username is a member of a channel that they do not have access to.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Information Disclosure (CWE-200)
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
Rocket.Chatn/a	This issue has been fixed in version 6.0> and is backported for the supported versions. Check this document for more info: https://docs.rocket.chat/resources/get-support/enterprise-support#rocket.chat-versionsAffected

References

https://hackerone.com/reports/1445810

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